Piston-type internal combustion engine having two groups of cyli

Details Piston-type internal combustion engine having two groups of cyli Piston-type internal combustion engine having two groups of cyli

1997-03-10

1998-07-21

Denion, Thomas E.

Power plants

Internal combustion engine with treatment or handling of...

Material from exhaust structure fed to engine intake

60300, 60302, F02M 2506

Patent

active

057820880

ABSTRACT:
In an internal combustion engine with at least two groups of cylinders of which each has an exhaust pipe with a catalytic converter and of which one group can be shut down so that it is inoperative during part-load engine operation, the exhaust pipes are joined downstream of the catalytic converters by a common pipe section, and vacuum generating means are provided for subjecting the exhaust pipe of the inoperative cylinder group upstream of its catalytic converter during part load operation when the one cylinder group is shut down to vacuum for pulling exhaust gas from the common pipe section into the catalytic converter of the inoperative cylinder group.

REFERENCES:
patent: 5384098 (1995-01-01), Morikawa
patent: 5647207 (1997-07-01), Grotjahn et al.

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